add reference script for spark 4 detection

Author: steersbob

.devcontainer/devcontainer.json

@@ -36,7 +36,7 @@
     "mounts": [
         "source=/var/run/docker.sock,target=/var/run/docker.sock,type=bind", // mount the Docker socket
         "source=/etc/localtime,target=/etc/localtime,type=bind,readonly", // mount localtime
-        "source=/dev,target=/dev,type=bind", // Required for recognizing new USB devices
+        "source=/dev,target=/dev,type=bind" // Required for recognizing new USB devices
         // "source=${localWorkspaceFolder}/.devcontainer/.bash_aliases,target=/home/vscode/.bash_aliases,type=bind",
         // "source=brewblox-usb-proxy-extensions,target=/home/vscode/.vscode-server/extensions,type=volume"
     ],

README.md

@@ -16,6 +16,7 @@ The return value is a JSON object with all detected devices.
 The key is the device ID, and the value is the associated TCP port, or `null` if no proxy is active.
 
 Example output:
+
 ```json
 {
     "30003d001947383434353030":null,

find_usb_devices.py renamed to find_spark_3.py

@@ -7,10 +7,10 @@
     if (tty / 'device' / 'subsystem').resolve() != Path('/sys/bus/usb'):
         continue
 
-    dev = (tty / 'device').resolve()
-    usb_vid = (dev / '..' / 'idVendor').read_text().strip()
-    usb_pid = (dev / '..' / 'idProduct').read_text().strip()
-    usb_device_id = (dev / '..' / 'serial').read_text().strip()
+    dev_root = (tty / 'device').resolve() / '..'
+    usb_vid = (dev_root / 'idVendor').read_text().strip()
+    usb_pid = (dev_root / 'idProduct').read_text().strip()
+    usb_device_id = (dev_root / 'serial').read_text().strip()
 
     print(tty)
     print('\t', f'{usb_vid}:{usb_pid}')

find_spark_4.py

@@ -0,0 +1,24 @@
+from glob import glob
+from pathlib import Path
+from subprocess import run
+
+for tty in glob('/sys/class/tty/ttyUSB*'):
+    tty = Path(tty)
+
+    if (tty / 'device' / 'subsystem').resolve() != Path('/sys/bus/usb-serial'):
+        continue
+
+    dev_root = (tty / 'device').resolve() / '..' / '..'
+    usb_vid = (dev_root  / 'idVendor').read_text().strip()
+    usb_pid = (dev_root  / 'idProduct').read_text().strip()
+    usb_device_id = (dev_root / 'serial').read_text().strip()
+
+    print(tty)
+    print('\t', f'{usb_vid}:{usb_pid}')
+    print('\t', usb_device_id)
+    print('\t', '/dev/' + tty.name)
+
+    # To listen to the serial port, use the below code
+    # if usb_vid == '10c4' and usb_pid == 'ea60':
+    #     run(['sudo', '/usr/bin/socat', '-u', f'file:/dev/{tty.name},raw,echo=0,b115200', '-'])
+    #     break